This is coming from the factory service tech....the buzzer is really a timer for starting after sitting for a period of time. It allows the efi to set itself, read temp of engine and prepare for an engine start. For example in cold winter, waiting for the buzzer to stop allows the system to prepare for a cold weather start. Once engine is at operating temp then the buzzer is of no value, just press the brake pedal and hit the start. But for cold starts, you are supposed to wait until buzzer stops and engine will start more quickly. I do know it makes a big difference in the winter, but in warm weather (summer) I don't wait, just go to start. If my machine has not run for awhile I do wait for the buzzer. Hope this helps....